Microsoft Publisher (PUB) is a desktop publishing format used for creating professional layouts, newsletters, flyers, and marketing materials.
XLSB (Excel Binary Workbook) stores spreadsheet data in a binary format rather than XML, offering faster load and save times for large, complex workbooks while preserving all formulas and formatting.
Reach for PUB when your priority is desktop publishing, flyers, newsletters — its efficient compression makes sharing fast and storage minimal.
Reach for XLSB when your priority is large enterprise spreadsheets, financial modeling, big data analysis — its uncompromising quality ensures every detail is preserved.
Convert PUB files to XLSB online for free. High-quality conversion with no registration required.
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.pub,.PUB (max 100MB)
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PUB (Publisher PUB) - Microsoft Publisher, desktop publishing format. Best for desktop publishing, flyers, newsletters.
XLSB (XLSB) - Excel Binary Workbook, binary format for large, performance-intensive spreadsheets. Ideal for large enterprise spreadsheets, financial modeling, big data analysis.
Yes, GoConvertFile offers free conversion of PUB to XLSB for files up to 100MB. No registration required.
Most PUB to XLSB conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
XLSB is ideal for large enterprise spreadsheets, financial modeling, big data analysis. Excel Binary Workbook, binary format for large, performance-intensive spreadsheets
No, converting PUB to XLSB does not cause additional quality loss — XLSB uses lossless compression. However, any artifacts already present in the original PUB file will persist in the XLSB output.
XLSB files are typically 2-5x larger than equivalent PUB files because XLSB preserves all pixel data. This is expected and necessary for lossless quality.
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